Door-lock.



PATENTED FEB. 11,1908.

w. A MARKBY DOOR LOCK.

APPLICATION FILED r1219. 1907.

nn y 7N! nomus PETERS 00., wasnmarou. D. c.

PATENTBD FEB. 11. 1908. w. A. MARKEY.

DOOR LOOK.

APPLICATION FILED H13. 9, 1907.

2 SHEETS-SHEET 2 WITH EEEES WILLIAM A. MARKEY, OF MOUNDSVILLE, WESTVIRGINIA.

DOOR-LOCK.

Specification of Letters Patent.

Patented Feb. 11, 1908.

Application filed February 9, 1907. Serial No. 856,574.

To all whom it may concern:

Be it known that I, WILLIAM A. MARKEY, a citizen of the United States ofAmerica, and resident of Moundsville, county of Marshall, and State ofWest Virginia, have invented certain new and useful Improvements inDoor-Locks, of which the following is a specification.

This invention relates to new and usefulimprovements in door-locks, andit has for its object to provide a simple, durable and comparativelyinexpensive lock for doors which requires that only a small mortise beout in a door for its accommodation.

A further object is to provide a lock for doors in which a simple leveris employed for the operation of the door-bolt, thus dispensing with theordinary door-knob which requires a turn of the wrist to operate saidbolt.

WVith these and other objects in view, the invention finally consists inthe particular construction, arrangement and combination of parts whichwill hereinafter be fully described, reference being herein had to theaccompanying drawings, forming a part of this specification, in which-Figure 1 is a side elevation of the lock applied to a door; Fig. 2 is alongitudinal vertical section of the lock, taken just inside theface-plate thereof; Fig. 3 is a top plan view of the invention; Fig. 4is a cross section on the line 4-4, Fig. 1; Fig. 5 is a similar sectionon the line 55, Fig. 1; Fig. 6' is a perspective view of the bolt; Fig.7 is a front elevation of the locking slide; Fig. 8 is a perspectiveview of the key-operated lockingplate; andFig. 9 is a detail. view ofthe key employed.

Referring to said drawings, in which like designating characters denotelike parts throughout the several views-1 indicates a door in whichiscut a mortise 2 of a size slightly greater than is sufficient toaccommodate the working parts of the lock. Fitted within said mortisewith the face-plates 3 thereof in close embracing engagement with thefaces of the door on opposite sides are the main working parts of thelock. The parallel face-plates 3 are formed integral, having aconnecting plate 4 across the front end which efiectually closes the endof the mortise 2.. A vertical cross-plate 5, which is also preferablyformed integral with the faceplates 3, but which may be attachedseparate, stands at a suitable distance in the rear of theconnecting-plate 4. A suitable opening 6 is provided in theconnecting-plate 4 in which is held the enlarged front end, or

1 head, 7- of a movablelock-bolt 8 which consists of a yoke 9, acylindrical stem 10 having its rear end rigidly mounted in the front endof said yoke, and said head 7, which latter is integral with said stem.

The stem 10 is projected through and is movable in a central opening oraperture 11 provided in said cross-plate 3, and has its.

rear end mounted in the head 12 of the yoke 9, as hereinbeforementioned. A pin 13 projected through said head 12 and said stem 10connectssaid parts'rigidly together. The yoke consists of said head 12and two parallel yoke-members 14 which are integral therewith, one ofsaid members directly overlying the other.

Mounted one over the other upon a vertical pivot-pin 15 carried bythe'rear end of the yoke 9 are the flattened ends 16 ofoppositely-disposed hasps 17 which projecttransversely outward throughslots 18 provided in the face-plates 3. The bodies of said hasps on theouter sides of said faceplates are bent laterally and extend rearwardlysubstantially parallel to said faceplates, bearing upon their endssuitable knobs 19. Projecting flanges 20 are preferably provided on saidface-plates 3 at the edges of said slots 18, the adjacent faces of saidflanges being plain and flat and constituting bearing surfaces for themovable hasps.

Extending transversely between the members 14 of the yoke 9, and havingits ends revolubly mounted in the face-plates 3, is a pin or spindle 21;and fitted upon said spindle between the inner face-plate 3 and the yokeis a sleeve 22, the object of which is to firmly hold said yoke at adistance from said inner face-plate substantially in line with theopenings 11 and 6. Pivotally mounted upon said spindle 21. onv theopposite side of the projected lugs 27 having rounded points are carriedby said plate, as shown. In the outer face of the body 25 on oppositesides of its central opening are sockets 28 for receiving the prongs 29of a key 30 which is adapted to be inserted thereto from the outer sideof the look, a longitudinal slot 31 being provided in the outer end ofthe spindle for admitting the key. Recesses 32 are provided in the outerface-plate 3 for admitting the end 33 of the key therethrough, thespindle being first turned to cause its slot 31 to register with saidrecesses. Recesses 34 suitably located. in the key admit of its turningin the opening of the face-plate when it has been inserted to the properdepth for engagement with the locking-plate 23.

The locking-plate 23 normally stands ver-' tical as shown in Figs. 1 and2, thus admitting of a free longitudinal movement ofthe lockbolt 8. Anoutward pull on the knob 19 throws the lever-like hasp 17 forwardagainst the face-plate 3 at the front end of the slot 18, which servesas a fulcrum, and, turning on the pivot-pin l5, withdraws said bolt 8against the tension of the spring- 35 which encircles the stem 10between the bolt-head Upon releasing the knob 19,. said spring 35 againthrows the bolt 2 7 and the cross-plate 5.

outward.

To look the bolt 8 against movement, the

dle- 2,1.

passover said members and to drop therebetween, as shown in Figs. 3 and5, in which figures the said locking-plate is shown longitudinallyagainst the yoke with its lugs bei tween the members thereof and itsfront end. adjacent to the head 12 thereof, thuspreventing longitudinalmovement in said bolt 8.

means of which the bolt 8 may be locked plate 5 and carries an extensionwhich projects outward through the inner faceplate 3 and is bent to forma finger-piece 39. Said. slide has a circular hole or aperture 4.0

through which, when it registers with the hole 11 in the cross-plate 5,the stem 10 freely moves. Also provided in said slide is a slot 41 ofless width than the diameter of said hole 40, which slot communicates atone end with said hole. In the upper and under sides of the rear end ofthe stem 10 are provided recesses 42, as shown, into which the edges ofthe slide on the opposite sides of the slot 41 are adapted to be drawn,thus look- :ing the bolt against longitudinal movement.

- Having thus described my invention. what I claim as new, and desire tosecure by Letters Patent, is

- 1. In a door-lock, face-plates, a movable bolt interposed between saidplates, means for normally holding said bolt forced outward, a yokecarried by said bolt, a keyoperated locking-plate having inturned endsadapted for interlocking with said yoke when in one position, means fornormally holding said lockingplate in engagement with said yoke, saidlocking-plate being adapted for locking said bolt against retractionwhen the former occupies one position and for admitting of free movementof the bolt when it occupies another position.

2. In a doorlock, face-plates and a connecting end-plate, a movableboltcomprising a head, a stem and a yoke, said bolt interposed between saidplates, means for key 30 is inserted as hereinbefore described untilits. prongs 29 engage the sockets 28 of j the locking-plate 23; then,turning said key, the said locking-plate is revolved on the spin 1 Whenthe lugsv 27'engage the beveled f edges of the yoke-members 14, thelockingplate is gradually forced outward against the I tension of thespring 24, allowing the lugs to l normally holding said bolt forcedoutward with respect to said plates, a revoluble spindle extendingtransversely between the members of said yoke and having its endsmounted in said face-plates, said spindle being slotted at one end forthe reception of a key, a locking-plate having inturned ends revolubleupon said spindle, a spring interposed between said locking-plate andone of said face-plates for holding the former against the yoke-members,levers pivotally attached to the rear end of said yoke and projectingoutward through said face-plates, and means whereby the retraction ofsaid f bolt is prevented. when the inturned ends A. locking-slide 36 isalso provided by;

of the locking-plate stand between the yoke 1 members. against.vmovement from the inner side of the I doon. Said slide is fitted in achannel 37 provided therefor in the face of the cross- Signed by me inpresence of two subscribmg witnesses.

WVILLIAM A. MARKEY.

Witnesses:

H. E. DUNLoP, L. P. BOGERWITT.

